Shock Wave (image) University of North Carolina Health Care Share Print E-Mail Caption This is a velocity map of the brain. The transitions between blue and yellow indicate a shock front. Credit Pinton Lab, UNC-Chapel Hill Usage Restrictions credit properly Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.